/*
 * Copyright 2004-2011 H2 Group.
 * Copyright 2011 James Moger.
 * Copyright 2012 Frédéric Gaillard.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.iciql;

import com.iciql.Iciql.DataTypeAdapter;
import com.iciql.Iciql.IndexType;

/**
 * This class provides utility methods to define primary keys, indexes, and set
 * the name of the table.
 */

public class Define {

    private static TableDefinition<?> currentTableDefinition;
    private static Iciql currentTable;

    public static void skipCreate() {
        checkInDefine();
        currentTableDefinition.defineSkipCreate();
    }

    public static void index(IndexType type, Object... columns) {
        checkInDefine();
        currentTableDefinition.defineIndex(null, type, columns);
    }

    public static void index(String name, IndexType type, Object... columns) {
        checkInDefine();
        currentTableDefinition.defineIndex(name, type, columns);
    }

    public static void constraintUnique(String name, Object... columns) {
        checkInDefine();
        currentTableDefinition.defineConstraintUnique(name, columns);
    }

	/*
     * The variable argument type Object can't be used twice :-)
	 */
//	public static void constraintForeignKey(String name, String refTableName,
//			ConstraintDeleteType deleteType, ConstraintUpdateType updateType,
//			ConstraintDeferrabilityType deferrabilityType, Object... columns, Object... refColumns) {
//		checkInDefine();
//		currentTableDefinition.defineForeignKey(name, columns, refTableName, Columns, deleteType, updateType, deferrabilityType);
//	}

    public static void primaryKey(Object... columns) {
        checkInDefine();
        currentTableDefinition.definePrimaryKey(columns);
    }

    public static void schemaName(String schemaName) {
        checkInDefine();
        currentTableDefinition.defineSchemaName(schemaName);
    }

    public static void tableName(String tableName) {
        checkInDefine();
        currentTableDefinition.defineTableName(tableName);
    }

    public static void viewTableName(String viewTableName) {
        checkInDefine();
        currentTableDefinition.defineViewTableName(viewTableName);
    }

    public static void memoryTable() {
        checkInDefine();
        currentTableDefinition.defineMemoryTable();
    }

    public static void columnName(Object column, String columnName) {
        checkInDefine();
        currentTableDefinition.defineColumnName(column, columnName);
    }

    public static void autoIncrement(Object column) {
        checkInDefine();
        currentTableDefinition.defineAutoIncrement(column);
    }

    public static void length(Object column, int length) {
        checkInDefine();
        currentTableDefinition.defineLength(column, length);
    }

    public static void scale(Object column, int scale) {
        checkInDefine();
        currentTableDefinition.defineScale(column, scale);
    }

    public static void trim(Object column) {
        checkInDefine();
        currentTableDefinition.defineTrim(column);
    }

    public static void nullable(Object column, boolean isNullable) {
        checkInDefine();
        currentTableDefinition.defineNullable(column, isNullable);
    }

    public static void defaultValue(Object column, String defaultValue) {
        checkInDefine();
        currentTableDefinition.defineDefaultValue(column, defaultValue);
    }

    public static void constraint(Object column, String constraint) {
        checkInDefine();
        currentTableDefinition.defineConstraint(column, constraint);
    }

    public static void typeAdapter(Object column, Class<? extends DataTypeAdapter<?>> typeAdapter) {
        checkInDefine();
        currentTableDefinition.defineTypeAdapter(column, typeAdapter);
    }

    static synchronized <T> void define(TableDefinition<T> tableDefinition, Iciql table) {
        currentTableDefinition = tableDefinition;
        currentTable = table;
        tableDefinition.mapObject(table);
        table.defineIQ();
        currentTable = null;
        currentTableDefinition = null;
    }

    private static void checkInDefine() {
        if (currentTable == null) {
            throw new IciqlException("This method may only be called "
                    + "from within the define() method, and the define() method "
                    + "is called by the framework.");
        }
    }

}
